diff --git a/scripts/test-parallel.mjs b/scripts/test-parallel.mjs
index 78b2ad44f67..ef09968b223 100644
--- a/scripts/test-parallel.mjs
+++ b/scripts/test-parallel.mjs
@@ -28,6 +28,25 @@ const pnpm = "pnpm";
 const behaviorManifest = loadTestRunnerBehavior();
 const existingFiles = (entries) =>
   entries.map((entry) => entry.file).filter((file) => fs.existsSync(file));
+let tempArtifactDir = null;
+const ensureTempArtifactDir = () => {
+  if (tempArtifactDir === null) {
+    tempArtifactDir = fs.mkdtempSync(path.join(os.tmpdir(), "openclaw-test-parallel-"));
+  }
+  return tempArtifactDir;
+};
+const writeTempJsonArtifact = (name, value) => {
+  const filePath = path.join(ensureTempArtifactDir(), `${name}.json`);
+  fs.writeFileSync(filePath, `${JSON.stringify(value)}\n`, "utf8");
+  return filePath;
+};
+const cleanupTempArtifacts = () => {
+  if (tempArtifactDir === null) {
+    return;
+  }
+  fs.rmSync(tempArtifactDir, { recursive: true, force: true });
+  tempArtifactDir = null;
+};
 const existingUnitConfigFiles = (entries) => existingFiles(entries).filter(isUnitConfigTestFile);
 const unitBehaviorIsolatedFiles = existingUnitConfigFiles(behaviorManifest.unit.isolated);
 const unitSingletonIsolatedFiles = existingUnitConfigFiles(behaviorManifest.unit.singletonIsolated);
@@ -333,6 +352,10 @@ const unitFastExcludedFiles = [
 const unitAutoSingletonFiles = [
   ...new Set([...unitSingletonIsolatedFiles, ...memoryHeavyUnitFiles]),
 ];
+const unitFastExtraExcludeFile =
+  unitFastExcludedFiles.length > 0
+    ? writeTempJsonArtifact("vitest-unit-fast-excludes", unitFastExcludedFiles)
+    : null;
 const estimateUnitDurationMs = (file) =>
   unitTimingManifest.files[file]?.durationMs ?? unitTimingManifest.defaultDurationMs;
 const heavyUnitBuckets = packFilesByDuration(
@@ -349,6 +372,12 @@ const baseRuns = [
     ? [
         {
           name: "unit-fast",
+          env:
+            unitFastExtraExcludeFile === null
+              ? undefined
+              : {
+                  OPENCLAW_VITEST_EXTRA_EXCLUDE_FILE: unitFastExtraExcludeFile,
+                },
           args: [
             "vitest",
             "run",
@@ -356,7 +385,6 @@ const baseRuns = [
             "vitest.unit.config.ts",
             `--pool=${useVmForks ? "vmForks" : "forks"}`,
             ...(disableIsolation ? ["--isolate=false"] : []),
-            ...unitFastExcludedFiles.flatMap((file) => ["--exclude", file]),
           ],
         },
         ...(unitBehaviorIsolatedFiles.length > 0
@@ -982,7 +1010,12 @@ const runOnce = (entry, extraArgs = []) =>
     try {
       child = spawn(pnpm, args, {
         stdio: ["inherit", "pipe", "pipe"],
-        env: { ...process.env, VITEST_GROUP: entry.name, NODE_OPTIONS: resolvedNodeOptions },
+        env: {
+          ...process.env,
+          ...entry.env,
+          VITEST_GROUP: entry.name,
+          NODE_OPTIONS: resolvedNodeOptions,
+        },
         shell: isWindows,
       });
       captureTreeSample("spawn");
@@ -1134,6 +1167,7 @@ const shutdown = (signal) => {
 
 process.on("SIGINT", () => shutdown("SIGINT"));
 process.on("SIGTERM", () => shutdown("SIGTERM"));
+process.on("exit", cleanupTempArtifacts);
 
 if (process.env.OPENCLAW_TEST_LIST_LANES === "1") {
   const entriesToPrint = targetedEntries.length > 0 ? targetedEntries : runs;
diff --git a/test/vitest-unit-config.test.ts b/test/vitest-unit-config.test.ts
new file mode 100644
index 00000000000..4b420d944cf
--- /dev/null
+++ b/test/vitest-unit-config.test.ts
@@ -0,0 +1,53 @@
+import fs from "node:fs";
+import os from "node:os";
+import path from "node:path";
+import { afterEach, describe, expect, it } from "vitest";
+import { loadExtraExcludePatternsFromEnv } from "../vitest.unit.config.ts";
+
+const tempDirs = new Set<string>();
+
+afterEach(() => {
+  for (const dir of tempDirs) {
+    fs.rmSync(dir, { recursive: true, force: true });
+  }
+  tempDirs.clear();
+});
+
+const writeExcludeFile = (value: unknown) => {
+  const dir = fs.mkdtempSync(path.join(os.tmpdir(), "openclaw-vitest-unit-config-"));
+  tempDirs.add(dir);
+  const filePath = path.join(dir, "extra-exclude.json");
+  fs.writeFileSync(filePath, `${JSON.stringify(value)}\n`, "utf8");
+  return filePath;
+};
+
+describe("loadExtraExcludePatternsFromEnv", () => {
+  it("returns an empty list when no extra exclude file is configured", () => {
+    expect(loadExtraExcludePatternsFromEnv({})).toEqual([]);
+  });
+
+  it("loads extra exclude patterns from a JSON file", () => {
+    const filePath = writeExcludeFile([
+      "src/infra/update-runner.test.ts",
+      42,
+      "",
+      "ui/src/ui/views/chat.test.ts",
+    ]);
+
+    expect(
+      loadExtraExcludePatternsFromEnv({
+        OPENCLAW_VITEST_EXTRA_EXCLUDE_FILE: filePath,
+      }),
+    ).toEqual(["src/infra/update-runner.test.ts", "ui/src/ui/views/chat.test.ts"]);
+  });
+
+  it("throws when the configured file is not a JSON array", () => {
+    const filePath = writeExcludeFile({ exclude: ["src/infra/update-runner.test.ts"] });
+
+    expect(() =>
+      loadExtraExcludePatternsFromEnv({
+        OPENCLAW_VITEST_EXTRA_EXCLUDE_FILE: filePath,
+      }),
+    ).toThrow(/JSON array/u);
+  });
+});
diff --git a/vitest.unit.config.ts b/vitest.unit.config.ts
index ab6757c3351..8b98bae6cfe 100644
--- a/vitest.unit.config.ts
+++ b/vitest.unit.config.ts
@@ -1,3 +1,4 @@
+import fs from "node:fs";
 import { defineConfig } from "vitest/config";
 import baseConfig from "./vitest.config.ts";
 import {
@@ -8,12 +9,33 @@ import {
 const base = baseConfig as unknown as Record<string, unknown>;
 const baseTest = (baseConfig as { test?: { include?: string[]; exclude?: string[] } }).test ?? {};
 const exclude = baseTest.exclude ?? [];
+export function loadExtraExcludePatternsFromEnv(
+  env: Record<string, string | undefined> = process.env,
+): string[] {
+  const extraExcludeFile = env.OPENCLAW_VITEST_EXTRA_EXCLUDE_FILE?.trim();
+  if (!extraExcludeFile) {
+    return [];
+  }
+  const parsed = JSON.parse(fs.readFileSync(extraExcludeFile, "utf8")) as unknown;
+  if (!Array.isArray(parsed)) {
+    throw new TypeError(
+      `OPENCLAW_VITEST_EXTRA_EXCLUDE_FILE must point to a JSON array: ${extraExcludeFile}`,
+    );
+  }
+  return parsed.filter((value): value is string => typeof value === "string" && value.length > 0);
+}
 
 export default defineConfig({
   ...base,
   test: {
     ...baseTest,
     include: unitTestIncludePatterns,
-    exclude: [...exclude, ...unitTestAdditionalExcludePatterns],
+    exclude: [
+      ...new Set([
+        ...exclude,
+        ...unitTestAdditionalExcludePatterns,
+        ...loadExtraExcludePatternsFromEnv(),
+      ]),
+    ],
   },
 });